ISTA 3 in 1 CO2 Diffuser Bubble Counter Check Valve 20mm (M)- Aquarium Plant Tank

Very good product.. work perfectly.. Build quality - excellent Bubble counter - works absolutely okay Fine CO2 bubbles - excellent But you have to wait for 1-2 days for fine bubbles of CO2. I use it with DIY CO2 Kit (vinegar & baking soda)

bubble counter is worth the money my itself. bought another similar product for my 3 30 gallon tanks. other product said it did 4 things, bubble counter, check valve, and diffusser, can not rebember what the forth thing was. when i installed the 4 in one it worked well in that the bubble counter worked and the diffusser, if you soaked it for 24 hrs. i did not on one of them and i got nothing but big bubbles and they did not get smaller. this is why i bought this company's version. this one makes much smaller bubbles and much more of them, bigger diffuser, over all much better product. BUT, none of these products check valve worked. 0 for 4 or i do not know what a check valve is. when my timer turns on my co2 system it takes about 5 to 10 minutes to flush all the water and gases that should not be there before bubbles. Lucky i have back up check valves. This is not a deal breaker having a bubble counter right on the front lines, so to speack, is very nice gave product 5 stars for bubble counter and deffuser alone just have back up check valve.

vvv Good

The diffuser works but there was a pinhole leak that i had to seal... Frustrating

Nice